From 5ed688f0fb8259b5431f9a2c32e33885983676bb Mon Sep 17 00:00:00 2001
From: Paul van Tilburg <paul@luon.net>
Date: Tue, 10 Jan 2023 16:09:56 +0100
Subject: [PATCH] Add support for building and running a Docker image

---
 .dockerignore      | 15 +++++++++++++++
 Dockerfile         | 47 ++++++++++++++++++++++++++++++++++++++++++++++
 docker-compose.yml | 25 ++++++++++++++++++++++++
 3 files changed, 87 insertions(+)
 create mode 100644 .dockerignore
 create mode 100644 Dockerfile
 create mode 100644 docker-compose.yml

diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..e183625
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,15 @@
+# Local build and dev artifacts
+target
+
+# Docker files
+Dockerfile*
+docker-compose*
+
+# Git folder
+.git
+
+# Dot files
+.gitignore
+
+# TOML files
+Rocket.toml*
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..d42f783
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,47 @@
+# Using multistage build:
+#   https://docs.docker.com/develop/develop-images/multistage-build/
+#   https://whitfin.io/speeding-up-rust-docker-builds/
+
+##########################  BUILD IMAGE  ##########################
+# Rust build image to build Solar Grabber's statically compiled binary
+FROM docker.io/rust:1 as builder
+
+# Build the dependencies first
+RUN USER=root cargo new --bin /usr/src/solar-grabber
+WORKDIR /usr/src/solar-grabber
+COPY ./Cargo.* ./
+RUN cargo build --release
+RUN rm src/*.rs
+
+# Add the real project files from current folder
+ADD . ./
+
+# Build the actual binary from the copied local files
+RUN rm ./target/release/deps/solar_grabber*
+RUN cargo build --release
+
+########################## RUNTIME IMAGE ##########################
+# Create new stage with a minimal image for the actual runtime image/container
+FROM docker.io/debian:bullseye-slim
+
+# Install CA certificates
+RUN apt-get update && \
+      apt-get upgrade -y && \
+      apt-get install -y --no-install-recommends ca-certificates && \
+      rm -rf /var/lib/apt/lists/*
+
+# Copy the binary from the "builder" stage to the current stage
+RUN adduser --system --disabled-login --home /app --gecos "" --shell /bin/bash solar-grabber
+COPY --from=builder /usr/src/solar-grabber/target/release/solar-grabber /app
+
+# Standard port on which Rocket launches
+EXPOSE 8000
+
+# Set user to www-data
+USER solar-grabber
+
+# Set container home directory
+WORKDIR /app
+
+# Run Solar Grabber
+ENTRYPOINT [ "/app/solar-grabber" ]
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..04d3755
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,25 @@
+version: '3'
+
+services:
+  server:
+    image: solar-grabber:latest
+    build: .
+    restart: unless-stopped
+    ports:
+      - 2399:8000
+    # Use a `Rocket.toml` or configure the credentials using environment variables below
+    volumes:
+      - ./Rocket.toml:/app/Rocket.toml
+    environment:
+      ROCKET_LOG_LEVEL: normal  # Available levels are: off, debug, normal, critical
+      # For My Autarco, use the these variabels and uncomment them
+      # ROCKET_KIND: MyAutarco
+      # ROCKET_USERNAME: foo@domain.tld
+      # ROCKET_PASSWORD: secret
+      # ROCKET_SITE_ID: abc123de
+      # For Hoymiles, use the these variabels and uncomment them
+      # ROCKET_KIND: HoyMiles
+      # ROCKET_USERNAME: foo@domain.tld
+      # ROCKET_PASSWORD: secret
+      # ROCKET_SID: 123456
+    shm_size: '2gb'